1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Copyright (C) 2006 Atmark Techno, Inc. 4*4882a593Smuzhiyun */ 5*4882a593Smuzhiyun 6*4882a593Smuzhiyun #ifndef _ASM_MICROBLAZE_DMA_H 7*4882a593Smuzhiyun #define _ASM_MICROBLAZE_DMA_H 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun #ifndef CONFIG_MMU 10*4882a593Smuzhiyun /* we don't have dma address limit. define it as zero to be 11*4882a593Smuzhiyun * unlimited. */ 12*4882a593Smuzhiyun #define MAX_DMA_ADDRESS (0) 13*4882a593Smuzhiyun #else 14*4882a593Smuzhiyun /* Virtual address corresponding to last available physical memory address. */ 15*4882a593Smuzhiyun #define MAX_DMA_ADDRESS (CONFIG_KERNEL_START + memory_size - 1) 16*4882a593Smuzhiyun #endif 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun #ifdef CONFIG_PCI 19*4882a593Smuzhiyun extern int isa_dma_bridge_buggy; 20*4882a593Smuzhiyun #else 21*4882a593Smuzhiyun #define isa_dma_bridge_buggy (0) 22*4882a593Smuzhiyun #endif 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun #endif /* _ASM_MICROBLAZE_DMA_H */ 25